N64
⚠ Non-billable
Other disorders of breast
ICD-10-CM · FY2026 · Diseases of the Genitourinary System
Code
N64
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Genitourinary System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code N64?
ICD-10-CM code N64 represents Other disorders of breast. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Genitourinary System chapter, effective October 1, 2025 – September 30, 2026.
Is N64 billable?
No. N64 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is N64 in?
N64 belongs to the Diseases of the Genitourinary System chapter (N00–N99) of ICD-10-CM.
Related codes in the N64 category
N64.0
Fissure and fistula of nipple
Billable
N64.1
Fat necrosis of breast
Billable
N64.2
Atrophy of breast
Billable
N64.3
Galactorrhea not associated with childbirth
Billable
N64.4
Mastodynia
Billable
N64.5
Other signs and symptoms in breast
Non-billable
N64.8
Other specified disorders of breast
Non-billable
N64.9
Disorder of breast, unspecified
Billable
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